Harry Potter and the Cursed Child will be released as a book this summer.
The "special rehearsal edition" script book will be available at midnight on July 31, a day after the Harry Potter play opens in London.
The eBook will be published simultaneously with the print editions by Pottermore, Rowling's digital entertainment and e-commerce company, in collaboration with Little, Brown Book Group in the United Kingdom; and Scholastic in the United States and Canada.
The limited preview edition is not the final edition, a move made to allow the play's creative team to make changes while the play is in previews, according to the publisher. A "Definitive Collector's Edition" will be available later.